Kiernan K E
J Biosoc Sci. 1989 Oct;21(4):387-98. doi: 10.1017/s0021932000018125.
Who are the men and women who are childless in their mid-30s? Life history data for a British cohort born in 1946 show that age at marriage and marital breakdown were clearly associated with childlessness. Women who were only children were more likely to be childless than those with siblings. Further, early menarcheal age, being highly qualified and having a high status occupation were indirectly related to childlessness. For men, particularly amongst those who had experienced a broken marriage, it was the most ambitious, the highly educated and those in professional occupations who were relatively more likely to be childless.
那些35岁左右仍未生育的男女都是谁呢？一项针对1946年出生的英国队列的生活史数据表明，结婚年龄和婚姻破裂与无子女状况明显相关。独生子女女性比有兄弟姐妹的女性更有可能无子女。此外，初潮年龄早、高学历和高地位职业与无子女状况存在间接关联。对于男性而言，尤其是那些经历过婚姻破裂的男性，最有抱负、受过高等教育以及从事专业职业的男性相对更有可能无子女。
